public static class zlnkREST
    {
        static string CONST_UN = "twtmug"; // User your own UserName in Case you wanna track all your posts,
        static string CONST_Service = "http://zlnk.net/zlink.svc/";
        static string CONST_GetOriginalURL = "GetOriginalLink?ShortCode={0}&UN={1}";
        static string CONST_Shorten = "CreateShortLink?oUrl={0}&UN={1}";
        static string CONST_Default = "http://twtmug.com/";
 
        public static string ShortenURL(string strUrl)
        {